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7270066 |
Ice breaker (variants), method and system for single-support mooring and servicing ships
To ensure the possibility of offshore shipping of a liquid medium, primarily oil, from an onshore tank farm into sea-going tankers in the winter time in the ice conditions by ensuring both mooring...
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7150239 |
Method for aerating bodies of water
A body of water is aerated by propelling in the body of water a water pumping arrangement including a sheath having a turning propeller that (a) sucks water from the body into the sheath interior...
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7150434 |
Vehicle wake vortex modifier
Wake vortices are made less detectable or reduced in their effect on nearby vehicles by re-orientation of vorticity about an axis in the direction of vehicle motion to transverse vorticity...
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6062925 |
Service vessel operating method
A service vessel that is designed for navigating both in the open sea and in ice conditions is provided with a demountable propeller nozzle. For an ice-free navigation period the propeller nozzle...
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5996520 |
Icebreaking method and icebreaker
A relatively wide vessel is assisted through an ice field by an icebreaker having a relatively narrow hull. The icebreaker includes two steerable propulsion mechanisms at the opposite ends...
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5660131 |
Icebreaker attachment
A self-powered icebreaker attachment for connection to a parent vessel. In the preferred embodiment, the icebreaker attachment includes a spoon-shaped bow, an ice knife positioned aft of the bow,...
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5567078 |
Method for forming a sloped face ice control structure
The present invention pertains to sloped-faced, ice control elements that are each spaced apart across a riverbed adjacent to a floodplain region. The elements arrest a breakup ice run. The size...
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5325803 |
Icebreaking ship
For icebraking ships whose forward quarter is designed like a pontoon with an underside rising obliquely forward, and having icebreaking configurations on its sides, the hull can be equipped on...
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5218917 |
Icebreaking ship
An icebreaking ship has a hull including a forward part and an aft part and a screw arrangement in the aft part of the ship. The screw arrangement is designed for propulsion of the ship in the...
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5176092 |
Icebreaker bow and hull form
An icebreaker ship has a V-shaped bow and an S-shaped stem line with a wedge extending from the bottom of the stem line below the design waterline of the ship towards the sides until maximum width...
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5161477 |
Ice going ship
A ship's hull designed for traffic in icy waters has a general form defining a bottom that is substantially horizontal in longitudinal section and has a central longitudinal keel line, and, at both...
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5038695 |
Icebreaker
For improving the headway and sternway icebreaking characteristics, the hull of a ship has the greatest width of the icebreaking waterline in the forebody and has trimming and ballasting in the...
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5036781 |
Method and the means for removing ice from a ship's channel
The method and the apparatus for removing ice from a ship's channel or from around the ship, to ease its navigation. The invention is characterized in that the propeller stream is used for removing...
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4942837 |
Ice breaker
An icebreaker hull having laterally projecting hull components which define inclined upwardly and rearwardly sloped faces arranged in part above and in part below the vessels normal water line, and...
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4864950 |
Icebreaker
For reducing the adhesive and frictional forces of snow and ice acting on the outer hull plating of an icebreaker and in particular static frictional forces when the ship becomes stuck in the ice,...
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4860679 |
Ice breaker vessel
An ice breaker vessel and a method for increasing maneuverability and protecting the propellers against broken ice when going backwards. The ice breaker has two stern propellers and a steering...
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4781135 |
Ship hull
A ship hull has a general frame form defining a bottom surface and two side surfaces. The bottom surface of the hull has a horizontal bottom section that extends longitudinally of the hull midway...
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4732101 |
Stern apron for ice breakers
The stern apron is constructed as a volume body tapering to a sharp end in streamlined manner towards the stern of the ship and which at its lower outer edges is in each case wider than in the...
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4715305 |
Ship's hull
A ship's hull has a general frame form defining a bottom surface and two side surfaces. The bottom section of the hull comprises a substantially vertical wedge-formed portion, which extends...
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4702187 |
Bottom construction for a ship
The invention relates to a ship that is adapted for operating in ice-filled waters and has a general frame form defining a substantially horizontal bottom surface, two side surfaces, a stern and a...
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4666341 |
Mobile sea barge and plateform
A mobile sea barge having a unitary lower hull which has sufficient buoyancy to float the entire barge, an upper hull spaced from the lower hull by a single, centrally-positioned, vertical member,...
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4648342 |
Arrangement in vessels
A vessel with a ballast system including a plurality of ballast tanks provided with means for feeding water into the tanks and expelling water therefrom and an air bubbling system including...
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4644889 |
Sailboat keel
A sailboat keel structure, wherein the keel has an elongated body with fore and aft edges, and a generally elliptical cross-section. An elongated slotted opening is formed along the aft edge...
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4643121 |
Method of adding propulsive force to ice breaker
A method of adding propulsive force to an ice breaker in the process of breaking ice in a frozen sea by utilizing the strong tractive force of a winch, in which a pile is first inserted in the ice,...
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4636607 |
Method of enhancing an ice-breaking operation
In order to perform an ice-breaking operation more readily or with a defined geometry, an ice breaking aid is employed by virtue of which the ice is irradiated with high-frequency oscillations such...
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4597350 |
Mooring system and liquid cargo transfer facility for ice infested waters
A mooring and liquid transfer column which is fixed to the floor of an offshore body of water for securing a marine vessel. The column is resiliently retained and cable supported to permit its...
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4578000 |
Method of protection
A method for protecting stationary constructions, located in water and surrounded by water, against strain caused by a moving ice field in said water. A protective structure is arranged around said...
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4547093 |
Protection of vessels and equipment from moving ice
An installation 18 is protected by a circular array of drag elements 2. Each drag element is anchored to the seabed and has teeth on its upper surface which penetrate, and decelerate, moving ice...
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4543900 |
Shipboard ice lubrication system and jet pump for use therein
An ice lubrication system for easing the passage of a ship through ice laden waters. A pressurized flow of water passes through a nozzle into the inlet of a mixing chamber comprising a venturi...
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4532772 |
Method for producing model ice
An improved method for producing an ice layer suitable for ship model ice tests on a water surface by means of a spraying process is presented. Said improvement comprises the steps of creating a...
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4455958 |
Drillship canopy
A canopy system for deployment around the periphery of a vessel floating on a body of water is disclosed primarily for use in connection with drillships in Arctic waters. The disclosed canopy...
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4436046 |
Ice-breaking hull
An icebreaker hull is disclosed having cutting edges and sloping ramps that substantially surround the icebreaker's forefoot and taper as they continue aft along the sides of the hull. The cutting...
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4434741 |
Arctic barge drilling unit
An improved marine drilling barge for use in ice-covered water is disclosed. The barge has, besides a conventional moon pool through which conventional marine drilling operations can proceed, a...
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4433941 |
Structure for offshore exploitation
A structure for use in exploiting arctic offshore areas where floating ice masses may be present. The structure is comprised of a floating hull having ice-breaking capabilities which is moored by a...
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4428735 |
Propeller mount for icebreaker
A propeller mount for deflecting ice away from the propeller of an icebreaker includes a wedge-shaped body, the front end of which is pointed, and the remainder of which flares rearwardly to direct...
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4409918 |
Ice-breaking and conveying system
A shipborne system for clearing a channel through ice comprises in combination with a prow-mounted icebreaker shape, a giant siphon including an intake leading to an upward passage which inclines...
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4382419 |
Floating vessel with moon well and ice guard therefor
Large vessel having an opening in the bottom of the hull said hull portion being provided with an upwardly and downwardly movable grid structure shielding the opening against ice flakes which pass...
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4369725 |
Method and means for increasing the maneuverability of a ship in ice-covered waters
The disclosed method for increasing the maneuverability of a ship in ice-covered waters is comprised of bringing generally vertical ice-crushing surfaces on one side of a ship into contact with an...
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4365571 |
Ice disaggregation system
Improved apparatus is disclosed for supporting the cutting teeth on the periphery of a rotating cylindrical drum ice cutter affixed to a floating arctic structure. The cutting teeth are...
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4328760 |
Skirt construction
A skirt system is disclosed in combination with a barge floating on a body of water, the barge having a roof extending over the body of water, for providing a substantial ice-free zone around a...
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4326476 |
Navigation in ice covered waterways
A navigation channel is made in the ice covering the surface of a waterway by propelling a vessel so that its bow breaks the ice to form a channel having a width of the beam of the ship and an...
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4270476 |
Barge construction for warm air canopy ice-free zone
A novel barge construction is disclosed herein for providing a substantially ice-free zone around a vessel out to at least 100 feet from the vessel. The barge comprises: (a) a hull including a bow,...
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4252444 |
Apparatus for agitating liquids
An apparatus and method are provided for agitating liquids, maintaining solids in suspension and breaking up surface ice on waterways is provided in which a base plate having a plurality of...
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4245929 |
Arctic multi-angle conical structure
An offshore structure which is able to withstand the ice forces imposed thereon by impinging ice sheets and other larger masses of ice wherein the structure has an upper conical portion coaxially...
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4215756 |
Apparatus for preventing damage to the flexible skirt of an air cushion vehicle, by ice
An air cushion vehicle has a plurality of webs extending out between adjacent skirt members, with a solid or tubular peripheral member attached to the web members at their forward parts. The web...
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4208977 |
Icebreaking apparatus
The invention relates to a water navigable vessel having an ice-breaking bow and a rotatable screw mounted on the front on the bow for the purpose of advancing the vessel up onto an ice layer and...
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4117794 |
Ice melting system and method
A heat transfer method for melting thick layers of ice advancing toward an object facing the ice is disclosed. Elongated grooves or corrugations are disposed in the exterior surface of the object...
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4102144 |
Method and apparatus for protecting offshore structures against forces from moving ice sheets
A stationary offshore platform is protected against damage from moving ice sheets by a conical shield surrounding the platform support structure and having means, such as a pneumatic biasing...
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4083317 |
Method and apparatus for breaking ice with water
Ice is broken with expenditure of less energy by pumping water from beneath the ice and discharging it in large quantities onto the surface of the ice. Breaking stress is provided by the weight of...
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4080798 |
Arctic drilling base
An arctic drilling barge to perform offshore activities in the shallow water, fast ice regions of the arctic seas. Optimal ice interaction is obtained by shaping the hull of the barge in the form...
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